Preparation method of novel oversized fan casing of engine

The invention belongs to a processing and manufacturing technology of a novel large-size stainless steel fan casing of an engine, and relates to a preparation method of a novel oversized fan casing of an engine. According to the method, the large-specification bar with the diameter of phi 550mm, whi...

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Bibliographische Detailangaben
Hauptverfasser:	WANG XIN, ZHONG PING, WANG YU, LIU MUTONG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ALLOYS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL COMBINED OPERATIONS DIFFUSION TREATMENT OF METALLIC MATERIAL FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MACHINE TOOLS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS OTHER WORKING OF METAL PERFORMING OPERATIONS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS UNIVERSAL MACHINE TOOLS
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Beschreibung
Zusammenfassung:	The invention belongs to a processing and manufacturing technology of a novel large-size stainless steel fan casing of an engine, and relates to a preparation method of a novel oversized fan casing of an engine. According to the method, the large-specification bar with the diameter of phi 550mm, which is uniform in structure and less than 1% in delta ferrite content, is prepared by adopting an electric furnace and electroslag remelting. By designing the size of the ring blank and controlling the rolling temperature, the large-size ring part is homogenized and formed. The method comprises the following steps: firstly, obtaining an optimal heat treatment process for fan casing performance indexes to meet design index requirements; 2, a shot blasting process for remarkably prolonging the fatigue life of the fan casing; and 3, a surface protection process for further improving the corrosion resistance of the material. Various sizes and performances of the 0Cr17Ni4Cu4Nb steel fan casing prepared by the method meet